Major general Carl Pontus Gahn
Birth name	Carl Pontus Gahn
Born	(1759-03-01)1 March 1759 Falun, Sweden
Died	9 May 1825(1825-05-09) (aged 66) Stockholm, Sweden
Allegiance	Sweden
Service / branch	Swedish Army
Rank	Major general
Battles / wars	Anglo-French War (1778–1783) Siege of Gibraltar Siege of Port Mahón Russo-Swedish War (1788–1790) Battle of Parkumäki Battle of Kärnakoski (WIA) Battle of Savitaipal Dano-Swedish War (1808–1809) Battle of Trangen (POW) Swedish–Norwegian War Battle of Lier Battle of Matrand
Other work	President of the Court-Martial of Appeal

Carl Pontus Gahn (1 March 1759 – 9 May 1825) was a Swedish military officer who participated in the Russo-Swedish War in Finland in 1788–1789, the Finnish War campaign in Norway in 1808 and the unsuccessful invasion of Norway at Eidskog in 1814.^[1] He was ennobled in 1809, taking the title Gahn af Colquhoun in acknowledgement of his Scottish ancestry (Gahn was itself a contraction via Cahun of the family name of Colquhoun).^[2] He was promoted to the rank of Major General in 1814 and became president of the Court-Martial of Appeal in 1824.^[1]